نتایج جستجو برای: sbcl5 sio2

تعداد نتایج: 13958  

2014
Jung-Eun Kim Hyejin Kim Seong Soo A An Eun Ho Maeng Meyoung-Kon Kim Yoon-Jae Song

Silicon dioxide (SiO2) and zinc oxide (ZnO) nanoparticles are widely used in various applications, raising issues regarding the possible adverse effects of these metal oxide nanoparticles on human cells. In this study, we determined the cytotoxic effects of differently charged SiO2 and ZnO nanoparticles, with mean sizes of either 100 or 20 nm, on the U373MG human glioblastoma cell line. The ove...

2012
Antonio Tricoli

The structural stability of pure SnO2 nanoparticles and highly sensitive SnO2-SiO2 nanocomposites (0-15 SiO2 wt%) has been investigated for conditions relevant to their utilization as chemoresistive gas sensors. Thermal stabilization by SiO2 co-synthesis has been investigated at up to 600 °C determining regimes of crystal size stability as a function of SiO2-content. For operation up to 400 °C,...

Journal: :Molecules 2013
Huan Liu Chao Lin Zhen Ma Hongbo Yu Shenghu Zhou

Fe3O4 spheres with an average size of 273 nm were prepared in the presence of CTAB by a solvothermal method. The spheres were modified by a thin layer of SiO2, and then coated by mesoporous SiO2 (m-SiO2) films, by using TEOS as a precursor and CTAB as a soft template. The resulting m-SiO2/Fe3O4 spheres, with an average particle size of 320 nm, a high surface area (656 m2/g), and ordered nanopor...

2004
Edward Stolper Sarah Sherman Michael Garcia Caroline Seaman

[1] The Hawaii Scientific Drilling Project recovered 3 km of basalt by coring into the flank of Mauna Kea volcano at Hilo, Hawaii. Rocks recovered from deeper than 1 km were deposited below sea level and contain considerable fresh glass. We report electron microprobe analyses of 531 glasses from the submarine section of the core, providing a high-resolution record of petrogenesis over ca. 200 K...

2015
K. H. A. Bogart N. F. Dalleska G. R. Bogart Ellen R. Fisher

Articles you may be interested in Investigation of SiO2 plasma enhanced chemical vapor deposition through tetraethoxysilane using attenuated total reflection Fourier transform infrared spectroscopy Monte Carlo simulation of surface kinetics during plasma enhanced chemical vapor deposition of SiO2 using oxygen/tetraethoxysilane chemistry Determination of the mechanical stress in plasma enhanced ...

Journal: :Nano letters 2009
E Stolyarova D Stolyarov K Bolotin S Ryu L Liu K T Rim M Klima M Hybertsen I Pogorelsky I Pavlishin K Kusche J Hone P Kim H L Stormer V Yakimenko G Flynn

Mechanically exfoliated graphene mounted on a SiO2/Si substrate was subjected to HF/H(2)O etching or irradiation by energetic protons. In both cases gas was released from the SiO2 and accumulated at the graphene/SiO2 interface resulting in the formation of "bubbles" in the graphene sheet. Formation of these "bubbles" demonstrates the robust nature of single layer graphene membranes, which are c...

Journal: :Optics letters 2012
Benoit Mangote Laurent Gallais Mireille Commandré Mathias Mende Lars Jensen Henrik Ehlers Marco Jupé Detlev Ristau Andrius Melninkaitis Julius Mirauskas Valdas Sirutkaitis Simonas Kičas Tomas Tolenis Ramutis Drazdys

We report on the laser damage resistance of ion beam-sputtered oxide materials (Al2O3, Nb2O5, HfO2, SiO2, Ta2O5, ZrO2) and mixtures of Al2O3-SiO2, Nb2O5-SiO2, HfO2-SiO2, Ta2O5-SiO2, and ZrO2-SiO2, irradiated by single 500 fs pulses at 1030 nm. Laser-induced damage threshold (LIDT), refractive index, and bandgaps of the single-layer coatings are measured. For pure oxide materials a linear evolut...

2012
Yasunori Taga

This paper describes the results of room temperature joining of TiO2 / SiO2 IRF by sputter deposition with a special emphasis of improvement of adherence at the interface. This multilayer system is designed to shield the infrared energy of solar spectrum by interference reflection. The abrasion resistance of the multilayer stacks was also estimated by the Haze value after the Taber abrasion tes...

2013
Yongchao Li Hongpu Ma Bozhi Ren Tielong Li

Core-shell silica-coated Fe(0) nanoparticles (Fe@SiO2) were prepared in one-step synthesis by aqueous reduction combined with modified Stöber method. The as-prepared Fe@SiO2 were then used for simultaneous removal of Cr(VI) and Cd(II) from aqueous solution. Batch tests indicated that Fe@SiO2 exhibited high removal capacity toward Cr(VI) and Cd(II). Cr(VI) was removed by Fe@SiO2 through reductio...

2014
Mijung Jang Young Il Yoon Yong Soo Kwon Tae-Jong Yoon Hak Jong Lee Sung Il Hwang Bo La Yun Sun Mi Kim

OBJECTIVE To synthesize mesoporous silica-core-shell magnetic nanoparticles (MNPs) encapsulated by liposomes (Lipo [MNP@m-SiO2]) in order to enhance their stability, allow them to be used in any buffer solution, and to produce trastuzumab-conjugated (Lipo[MNP@m-SiO2]-Her2Ab) nanoparticles to be utilized in vitro for the targeting of breast cancer. MATERIALS AND METHODS The physiochemical char...

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